6 Leach's Petrel Numbers dropped considerably from 304 in April to 32 this month as the birds moved north to breed. Distribution was fairly random although 10 were seen on 12 May south of Oahu. White-tailed Tropicbird Fourteen birds were seen in May, a slight increase from 8 in April, but below the record 24 seen last May when the ship passed close by cliffs where the birds were breeding on Maui. Red-tailed Tropicbird Nine of the thirteen seen in May were south of 15° N. Almost twice as many (25) were seen in May 1964. Blue-faced Booby All 5 birds were at the southern end of the area, as has been the case in previous months. Three were flying in a group on 24 May, returning to the ship several times over a period of an hour. All birds were immatures or sub-adults. Brown Booby All 5 birds were seen within sight of Oahu. Four were taking part in feeding flocks. Red-footed Booby All 114 birds were within 50 miles of Oahu. Most were in feeding flocks. Great Frigatebird A new high of 48 birds was recorded in May, all within 400 miles